


Case and 
Column of 
Drawers. 

Gc 
Gc7? 
Gdl 
FC 
Gcv7 
Get 
Gc7 
Gc 
FC 

Reference to McCoy’s 
Synopsis: and Figures of Genera. 

WENLOCK GROUP. 
137 

Names and References; Observations, &c. 

| Lingula, sp. 


Lamellibranchs. All Brachiopods differ from 
Lamellibranchs or ordinary bivalves, by the 
development of a ventral shell, and the ab- 
sence of a foot. The hinge is different, no 
cartilage supporting it, while the opening of 
the valves is effected by muscles, as Prof. 
McCoy first sbewed (loc. cit.). Prof. Owen 
has dissected the animal (Phil. Trans. and 
Davidson’s Introductory Memoir to the 
British Fossil Brachiopoda). 
Lingula Lewisii, Sow. (Davidson, Sil. Brach. 
p. 35, t. 3, figs. 1—6). A broad rectangular 
species, the front rounded. Siluria, pl. 20, 
fig. 5. 
Lingula Symondsii, Salter (Davidson, Sil. 
Brach, p. 45, t. 3, figs. 7—17). 
New, larger than last, and very 
closely striated in lines of growth. 
Lingula, sp. Large, flat (new?). 
Obolus, Eichwald, 1829. 
Obolus transversus, Salter (Davidson, Sil. Brach. 
p. 59, t. 5, figs. 1—6). 
Obolus Davidsoni, Salter (Davidson, Sil. Brach. 
t. 4, figs. 30—39). Muscles broad, large. 
2. Hinged Calcareous Shells. 
Spirifer, Sowerby. Altered to Spirifera with- 
out much reason by various authors. Pri- 
ority, unless a name be obviously wrong, 
rules in Natural History. 
Spirifer sulcatus, Hisinger (Leth. Suecica, t. 21, 
fig. 6, Davidson, Sil. Br. pl. 10, figs. 4—6, 
Siluria, 2nd ed. pl. 21, figs. 5, 6). 
Numbers and Localities, 


a. 708, Dudley Shales 
(Lower Ludlow 2), F. C, 
a. 706*, Cheney Longville 
(W. Shale); a. 710, a. 707, 
a. 706, Dudley, Wenlock 
Shale, F. C. 
a, 714, Dudley, L. Ludlow? 
a. 709, Dudley, L. Ludlow. 
a. 701, a. 702, Dudley, W. 
Limestone and Shale; a. 
703—a. 705, W. Shale, 
true variety, Dudley, F. C. 
a.705*, Dudley (limestone), 
F.C. 
a. 720, Dudley, F.C. 
18 
